A-B, While the latency to the excitatory peak of the STRF did not change between early and late STRFs, there was a significant increase in the peak’s duration by 4.8% (p<0.02). However, neither the latency nor duration of the STRF envelope changed significantly (data not shown). C,E, There were no significant differences between early and late STRFs measured by the bandwidth of angular frequencies (taken at 75% of the peak of the MTF spectral transfer function and the asymmetry of the MTF temporal transfer function. D, However, there was a 1% decreasing trend in the MTF angular frequency center of mass which was approaching significance (p=0.09).